Heel-nailing machine



(No Model.)-

H. A. HENDERSON.

HEEL NAILIIIG MACHINE.

Fig. Fig. 6. 7

Fig.5.

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NITED STATES PATENT OFFICE.

HENRY A. HENDEEsON, OF LYNN, .MAssAcHUsErrs, AssIcNoE TO THE NATIONAL HEELING MAoHINE ooMPANY, OF PORTLAND, MAINE.

HEEL-NAILING MACHINE.

SPECIFICATION forming part of Letters Patent No. 317,646, dated May 12, 1885.

Application filed January 13, 1885.

To all whom it may concern.-

Be it known that I, HENRY A. HENDERSON, of Lynn, in the county of Essex and State of Massachusetts, a citizen of the United States, have invented a new and useful Improvement in Heel-Nailing Machines, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming a part of this specification, in explaining its nature.

In attaching heels or heel-blanks to boots and shoes by heel-attaching machines, considerable pressure is generally employed in solidifying or compressing the heel or heel blank, and especially is this the case with the machine known as the National Heel-Nailing Machine, which compresses the heel-blank upon the sole of the boot or shoe before the attaching-nails are driven, and holds it thus compressed while the attachingnails are being driven, or at the same time increasing the pressure upon the blank, if desired. The effect of this upon the heel-blank when a pressure-plate of ordinary construction is used is to sink the section of the heel on a line with the nails, and make the outer edge and central part of the heel somewhat higher; and if the heel is blind-nailed-that is, if a top lift is to be afterward employedits surface follows to some extent this uneven shape of the upper surface of the heel-blank. To overcome this defect I have found it desirable to apply more pressure to the edge of the heel-blank than to the central part thereof, and this I accomplish by forming in the pressure-plate a recess having a concave or inclined border or side, which is arranged to bear upon the margin of the heel-blank from the vicinity Of the line of the nail-holes outward to its edge.

In the drawings, Figure 1 shows a portion of the National attachingmachine, the heel being in place below the pressure-plate. Fig. 2 is a view of the templet or pressure plate inverted. Fig. 3 is a like view of a plate having the recess extended to the edge. and 5 are vertical sections through the templet or pressure plate and heel-blank to illustrate the operation of my invention. Figs. 6 and 7 show in a somewhat exaggerated form the defects which my improvement remedies. Fig. 8 is an enlarged view of the heel and templet Figs. 4

(N0 model.)

or pressure plate, and Fig. 9 is a plan of the complete heel.

In the drawings, A is the templet or pressure plate, in which are the holes a, into which nails are fed, and from which they are driven by the drivers. This plate has upon its under surface the recess a, which is generally within the line of the holes a and the inclined wall or edge of, which surrounds the section a, and which forms the wall or outer edge thereof, and the greater part of which is generally arranged upon the outside of the line of the nail-holes. This sunken portion of the pressure-plate, as a whole, has the contour of the upper surface of the inverted heel-blank or heelthat is, it is so shaped that when brought to bear upon the surface of the inverted blank or heel the fiat or very nearly flat portion a rests upon the central portion of the upper surface of the inverted blank, or that portion within the line of the nail-holes, and the remaining portion or incline rests upon the outer section of the upper surface. This is best illustrated by the plan view in Fig. 9, where the line a includes,substantially,the section covered by the section a of the templet'plate and the portion a the section covered by the part a of the templet-plate, which may or may not ex tend across the front section of the heel.

In Fig. 6 I have represented a heel-blank nailed with a fiat pressure-plate, and in Fig. 7 the same heel with the top lift applied, showing the effect produced upon the form of the heel thereby,-and in Fig. 4 I have represented a heel-blank which has been submitted to my improved process, and in Fig. 5 a heel with the top lift applied thereto, showing the effect of my improvement thereon.

In operation the boot or shoe is mounted upon the support and moved into position under the templet or pressure plate. The templet-plate is then moved downward, and its pressing-surface brought in contact with the inverted surface of the heel-blank, and the awls are then reciprocated and the heel-blank still more compressed. The nails are then fed into the holes a and driven by the drivers, and if the heel is to be blind-nailed the templetplate is then moved and the top lift spanked It will be seen that the heel-blank or heel submitted to the pressure of the plate A has the outer edge of the upper portion, when inverted, compressed to such an extentthat, upon the driving of the attaching-nails and the removal of the pressure, the upper surface of the inverted heel does not show any depression along thelineofthe attachingnails, and that it is rounded sufficiently to provide a good finish to the heel, or a good foundation or surface for the top lift if one is used, because the top lift will be caused to take substantially the shape of the surface to which it is attached. It is obvious that this shaping of the heel can take place in heel making and prickingmm. chines as Well as in heel-attaching machines. It is also obvious that the surface a of the templet must bear With more pressure upon the heel-blank than the section a, and that the portion of the heel-blank upon'which it is brought to bear must be more compressed 2o than'the part which is subjected to the operation of section (0.

Having thus fully described my invention, I claim and desire to secure by Letters Patent of the United States 1. In a heel making or attaching machine, a pressurcplate or templet, A, having the surface aa as and for the purposes described.

2. In a heel making or attaching machine, the pressure or templet plate A, having the 0 holes a and the pressing-surfaces a a arranged in relation to each other substantially as and for thepurposes described.

HENRY A. HENDERSON.

\Vitnesses:

F. F. RAYMOND, 2d, J. M. DOLAN,

FRED. B. DOLAN. 

